// Copyright 2013 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
//       copyright notice, this list of conditions and the following
//       disclaimer in the documentation and/or other materials provided
//       with the distribution.
//     * Neither the name of Google Inc. nor the names of its
//       contributors may be used to endorse or promote products derived
//       from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

// Flags: --expose-gc --allow-natives-syntax --concurrent-recompilation
// Flags: --turbofan --no-always-turbofan

function test(fun) {
  %PrepareFunctionForOptimization(fun);
  fun();
  fun();
  %DisableOptimizationFinalization();
  %OptimizeFunctionOnNextCall(fun, "concurrent");
  // Kick off recompilation.
  fun();
  // Tenure cons string after compile graph has been created.
  %WaitForBackgroundOptimization();
  gc();
  // In the mean time, concurrent recompiling is still blocked.
  assertUnoptimized(fun);
  // Let concurrent recompilation finish.
  %FinalizeOptimization();
  // Concurrent recompilation eventually finishes, embeds tenured cons string.
  assertOptimized(fun);
  // Visit embedded cons string during mark compact.
  gc();
}

function f() {
  return "abcdefghijklmn" + "123456789";
}

function g() {
  return "abcdefghijklmn\u2603" + "123456789";
}

function h() {
  return "abcdefghijklmn\u2603" + "123456789\u2604";
}

test(f);
test(g);
test(h);
